// SPDX-License-Identifier: Apache-2.0
//===-- wasmedge/test/loader/descriptionTest.cpp - Load AST description ---===//
//
// Part of the WasmEdge Project.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file contents unit tests of loading AST description nodes, which are
/// ImportDesc and ExportDesc.
///
//===----------------------------------------------------------------------===//

#include "loader/loader.h"

#include "gtest/gtest.h"

namespace {

WasmEdge::Configure Conf;
WasmEdge::Loader::Loader Ldr(Conf);
std::vector<uint8_t> prefixedVec(const std::vector<uint8_t> &Vec) {
  std::vector<uint8_t> PrefixVec = {
      0x00U, 0x61U, 0x73U, 0x6DU, /// Magic
      0x01U, 0x00U, 0x00U, 0x00U  /// Version
  };
  PrefixVec.reserve(PrefixVec.size() + Vec.size());
  PrefixVec.insert(PrefixVec.end(), Vec.begin(), Vec.end());
  return PrefixVec;
}

TEST(DescriptionTest, LoadImportDesc) {
  std::vector<uint8_t> Vec;

  Conf.removeProposal(WasmEdge::Proposal::ImportExportMutGlobals);
  WasmEdge::Loader::Loader LdrNoImpMutGlob(Conf);

  /// 1. Test load import description.
  ///
  ///   1.  Load invalid empty import description.
  ///   2.  Load import description with empty module and external name.
  ///   3.  Load import description with module and external names.
  ///   4.  Load import description with invalid external type.
  ///   5.  Load import description of table type.
  ///   6.  Load import description of memory type.
  ///   7.  Load import description of global type.
  ///   8.  Load invalid import description of global type without Mut-Globals
  ///       proposal.

  Vec = {
      0x02U, /// Import section
      0x01U, /// Content size = 1
      0x01U  /// Vector length = 1
  };
  EXPECT_FALSE(Ldr.parseModule(prefixedVec(Vec)));

  Vec = {
      0x02U,       /// Import section
      0x05U,       /// Content size = 5
      0x01U,       /// Vector length = 1
      0x00U,       /// Empty module name
      0x00U,       /// Empty external name
      0x00U, 0x00U /// function type and index
  };
  EXPECT_TRUE(Ldr.parseModule(prefixedVec(Vec)));

  Vec = {
      0x02U,                                           /// Import section
      0x0FU,                                           /// Content size = 15
      0x01U,                                           /// Vector length = 1
      0x04U, 0x74U, 0x65U, 0x73U, 0x74U,               /// Module name: test
      0x06U, 0x4CU, 0x6FU, 0x61U, 0x64U, 0x65U, 0x72U, /// External name: Loader
      0x00U, 0x00U /// function type and index
  };
  EXPECT_TRUE(Ldr.parseModule(prefixedVec(Vec)));

  Vec = {
      0x02U,                                           /// Import section
      0x0EU,                                           /// Content size = 14
      0x01U,                                           /// Vector length = 1
      0x04U, 0x74U, 0x65U, 0x73U, 0x74U,               /// Module name: test
      0x06U, 0x4CU, 0x6FU, 0x61U, 0x64U, 0x65U, 0x72U, /// External name: Loader
      0x04U, 0x00U                                     /// Invalid external type
  };
  EXPECT_FALSE(Ldr.parseModule(prefixedVec(Vec)));

  Vec = {
      0x02U,                                           /// Import section
      0x1AU,                                           /// Content size = 26
      0x01U,                                           /// Vector length = 1
      0x04U, 0x74U, 0x65U, 0x73U, 0x74U,               /// Module name: test
      0x06U, 0x4CU, 0x6FU, 0x61U, 0x64U, 0x65U, 0x72U, /// External name: Loader
      0x01U,                                           /// Table type
      0x70U,                                           /// Reference type
      0x01U,                                           /// Has min and max
      0xF1U, 0xFFU, 0xFFU, 0xFFU, 0x0FU,               /// Min = 4294967281
      0xFFU, 0xFFU, 0xFFU, 0xFFU, 0x0FU                /// Max = 4294967295
  };
  EXPECT_TRUE(Ldr.parseModule(prefixedVec(Vec)));

  Vec = {
      0x02U,                                           /// Import section
      0x19U,                                           /// Content size = 25
      0x01U,                                           /// Vector length = 1
      0x04U, 0x74U, 0x65U, 0x73U, 0x74U,               /// Module name: test
      0x06U, 0x4CU, 0x6FU, 0x61U, 0x64U, 0x65U, 0x72U, /// External name: Loader
      0x02U,                                           /// Memory type
      0x01U,                                           /// Has min and max
      0xF1U, 0xFFU, 0xFFU, 0xFFU, 0x0FU,               /// Min = 4294967281
      0xFFU, 0xFFU, 0xFFU, 0xFFU, 0x0FU                /// Max = 4294967295
  };
  EXPECT_TRUE(Ldr.parseModule(prefixedVec(Vec)));

  Vec = {
      0x02U,                                           /// Import section
      0x10U,                                           /// Content size = 16
      0x01U,                                           /// Vector length = 1
      0x04U, 0x74U, 0x65U, 0x73U, 0x74U,               /// Module name: test
      0x06U, 0x4CU, 0x6FU, 0x61U, 0x64U, 0x65U, 0x72U, /// External name: Loader
      0x03U,                                           /// Global type
      0x7CU, 0x00U                                     /// Const F64 number type
  };
  EXPECT_TRUE(Ldr.parseModule(prefixedVec(Vec)));

  Vec = {
      0x02U,                                           /// Import section
      0x10U,                                           /// Content size = 16
      0x01U,                                           /// Vector length = 1
      0x04U, 0x74U, 0x65U, 0x73U, 0x74U,               /// Module name: test
      0x06U, 0x4CU, 0x6FU, 0x61U, 0x64U, 0x65U, 0x72U, /// External name: Loader
      0x03U,                                           /// Global type
      0x7CU, 0x01U                                     /// Mut F64 number type
  };
  EXPECT_FALSE(LdrNoImpMutGlob.parseModule(prefixedVec(Vec)));
}

TEST(DescriptionTest, LoadExportDesc) {
  std::vector<uint8_t> Vec;

  /// 2. Test load export description.
  ///
  ///   1.  Load invalid empty export description.
  ///   2.  Load export description with empty module name.
  ///   3.  Load export description with non-empty module name.
  ///   4.  Load export description with invalid external type.
  ///   5.  Load export description of table type.

  Vec = {
      0x07U, /// Export section
      0x01U, /// Content size = 1
      0x01U  /// Vector length = 1
  };
  EXPECT_FALSE(Ldr.parseModule(prefixedVec(Vec)));

  Vec = {
      0x07U,       /// Export section
      0x04U,       /// Content size = 4
      0x01U,       /// Vector length = 1
      0x00U,       /// Empty external name
      0x00U, 0x00U /// function type and index
  };
  EXPECT_TRUE(Ldr.parseModule(prefixedVec(Vec)));

  Vec = {
      0x07U,                                           /// Export section
      0x0AU,                                           /// Content size = 10
      0x01U,                                           /// Vector length = 1
      0x06U, 0x4CU, 0x6FU, 0x61U, 0x64U, 0x65U, 0x72U, /// External name: Loader
      0x00U, 0x00U /// function type and index
  };
  EXPECT_TRUE(Ldr.parseModule(prefixedVec(Vec)));

  Vec = {
      0x07U,                                           /// Export section
      0x0AU,                                           /// Content size = 10
      0x01U,                                           /// Vector length = 1
      0x06U, 0x4CU, 0x6FU, 0x61U, 0x64U, 0x65U, 0x72U, /// External name: Loader
      0x04U, 0x00U                                     /// Invalid external type
  };
  EXPECT_FALSE(Ldr.parseModule(prefixedVec(Vec)));

  Vec = {
      0x07U,                                           /// Export section
      0x0EU,                                           /// Content size = 14
      0x01U,                                           /// Vector length = 1
      0x06U, 0x4CU, 0x6FU, 0x61U, 0x64U, 0x65U, 0x72U, /// External name: Loader
      0x01U, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0x0FU /// Table type and table index
  };
  EXPECT_TRUE(Ldr.parseModule(prefixedVec(Vec)));
}
} // namespace
